Initiates a chat session.
Routes to different implementations based on feature flags:
Parameters: developer (Developer): The developer associated with the chat session. session_id (UUID): The unique identifier of the chat session. chat_input (ChatInput): The chat input data. background_tasks (BackgroundTasks): The background tasks to run. x_custom_api_key (Optional[str]): The custom API key. mock_response (Optional[str]): Mock response for testing. connection_pool: Connection pool for testing purposes.
Returns: ChatResponse or StreamingResponse: The chat response or streaming response.
1auto, none 1204-1 <= x <= 1000x >= 10 <= x <= 20 <= x <= 20 <= x <= 1-2 <= x <= 2-2 <= x <= 20 <= x <= 50 <= x <= 1Successful Response